Skunk2 Ultra Series Race intake manifold for B16A, B17A, B18C1, and B18C5 VTEC heads, developed with CFD modeling as the successor to the Pro Series manifold. Its three piece modular design uses a removable 3.5L plenum that grows to 4.5L with the optional 1L billet aluminum spacer (907-05-9001), and it is cast from 356 aluminum alloy with CNC machined surfaces and thick runner walls for porting. Features include 6.5 in. tilted and tapered runners, raised 87mm velocity stacks, a 90mm throttle body flange in the 5.0L Ford pattern, and provisions for additional injectors. Not compatible with non-VTEC heads.
Specifications
| Type | Intake manifold (Skunk2 Ultra Series Race) |
| Plenum Volume | 3.5L (4.5L with 907-05-9001 spacer) |
| Material | 356 aluminum alloy, CNC machined |
| Finish | Silver |
| Throttle Body Flange | 90mm, 5.0L Ford pattern |
| Runners | 6.5 in. tilted and tapered |
| Velocity Stacks | 87mm, raised |
| Ports | 4 x 1/8 in. NPT, 3 x 1/4 in. NPT, 1 x OEM air intake temperature |
| Engine | B16A, B17A, B18C1, B18C5 (VTEC heads only) |
| Includes | Thermal manifold flange gasket, mounting hardware |
| Pairs With | Skunk2 907-05-9001 1L plenum spacer (for 4.5L) |
| Quantity | 1 |
| Part Number | 307-05-9000 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1992-2001 | Acura | Integra | GS-R |
| 1997-1998,2000-2001 | Acura | Integra | Type R |
| 1999-2000 | Honda | Civic | Si |
| 1994-1995 | Honda | Civic del Sol | VTEC |
Shipping
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- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
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Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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